The Peugeot 604 is a mid-size luxury sedan produced by the French automaker Peugeot from 1975 to 1985. Designed by the renowned Italian designer Pininfarina, it features a spacious interior and a comfortable ride, making it popular among families and business professionals. The car was available with various engine options, including both gasoline and diesel variants. The 604 was notable for its advanced engineering, including independent suspension and a robust chassis. It was one of the first European cars to offer a turbocharged diesel engine, which contributed to its reputation for efficiency. The model was eventually succeeded by the Peugeot 605.